If Donald Trump becomes the GOP presidential nominee in 2024, he won’t have at least one of his opponents’ blessing.

“I’m not going to support Donald Trump,” former Rep. Will Hurd (R-Texas) told CNN’s Kaitlan Collins Thursday night, straying from other candidates who’ve said they’ll support whoever becomes the Republican nominee.

The comment came when Hurd was asked whether he would sign the Republican National Committee-issued pledge to support the party’s presidential nominee, as former New Jersey Gov. Chris Christie and former Arkansas Gov. Asa Hutchinson have said they would.

The former lawmaker took it a step further, saying Trump “100 percent” betrayed the nation if the allegations of Trump mishandling sensitive U.S. intelligence are true — stressing that he is innocent until proven guilty.

Hurd, a moderate who announced his candidacy on Thursday, is likely a longshot in the already-crowded GOP presidential race. He has been a longtime critic of the former president, having called the “border crisis” a “myth,” opposed the Trump administration’s border wall and supported a pathway to citizenship for DREAMers.